Plum tree management methods
1. The plum sapling type adopts a spindle-shaped tree type, the tree height is 1m~1m.8m, the trunk height is 30cm, the central trunk is divided into 4~5 layers, and 12~15 main branches grow, parallel growth and even distribution , the main branch growth angle is 70~80 degrees, the main branch length is 40cm~70cm, suitable for planting specifications of 2m×1m.
2. Summer shears are carried out according to the tree type standard. Choose to wipe the buds, soften the branches, twist the tips, control the vigorous growth of the erect branches and plum saplings from an open angle, ensure the ventilation and light of the plum saplings, and balance the potential of the tree. After the fruit is harvested, the excessively long branches are moderately reduced to medium-sized branches. Keep a new tip.
3. Winter cut Cutting adopts long shoot pruning, mainly sparse, sparse without branches, cross branches, too dense branches, back erect branches, control tree height, maintain tree length, and improve fruiting ability.
4. Chemical control Use paclobutrazol to control the growth of plum saplings in mid-to-late July every year to promote the formation of flower buds, and use it every day 15% paclobutrazol 300 times liquid, sprayed 3 times continuously.
5. Flowering period management method, flowering period assists in pollination. Choose pollination methods such as artificial pollination, duster duster or bee release to ensure the number of fruit. The fruit thinning is carried out twice, and the first time is carried out within 3 weeks of flower withering, and the sick fruit, double fruit, small fruit, and too dense fruit are thinned. The second time is carried out within 5 weeks of flower withering, and the amount of retained fruit is calculated according to the yield of 2000 kg per mu. After fruit thinning, the remaining fruit should be evenly distributed on the branches.